摘要
分析以往常规水平井工程设计中先钻井、再完井、后储层改造工序对非常规储层高效开发的局限性,建立以油藏数值模拟和裂缝模拟为主,不考虑井筒等条件下致密油气体积改造最大化为核心的工程设计思路,内容包括:进行横向裂缝与纵向裂缝的井眼轨迹优化,研究表明对于非常规致密储层,横向裂缝比纵向裂缝产量可以提高25%。得出非常规致密储层水平井轨迹应沿着最小水平主应力方向布置,这样压裂形成的裂缝为横切缝;为实现最大改造体积,建立油藏改造泄流体积最大化的设计施工参数,包括规模与排量等参数;根据确定的改造体积设计水平井完井及分段改造方案,给出了目前几种水平井分段工具的特点及适应条件,进行完井工具与分段改造优化。最终得出一套以储层体积改造为首,再钻井及完井分段工具设计的新方法,实现了工程技术的有机一体化,为非常规油气水平井体积改造后实现高效、经济开发提出新的手段。
The horizontal well engineering design procedures(drilling,completion,next reservoir reconstruct) can not meet the unconventional reservoir effective development.A new engineering design process which took the stimulated reservoir volume(SRV) maximization as the core was established by numerical simulation of reservoir and fracture simulation without considering wellbore conditions,which including:(1) optimizing wellbore trajectory from transverse and longitudinal fracture,research showed that yield of transverse fracture could be improved by 25% than longitudinal fracture in unconventional tight reservoir,therefore the horizontal well trajectory of unconventional tight reservoir should be distributed along a minimum horizontal principal stress direction;(2) establishing the construction parameters of maximum SRV design to determine the maximum transformation volume;(3) according to the determined SRV,proposing the optimization design of multi-stage fracturing,and analyzing the features and adaptable conditions of sectionlization tools.Finally a set of optimization design method which including drilling and completion and SRV treatment was obtained.It was suitable for the high efficiency development of unconventional tight oil and gas reservoir.
出处
《钻采工艺》
CAS
北大核心
2013年第6期17-19,2,共3页
Drilling & Production Technology
基金
国家科技重大专项"低渗
特低渗油气储层高效改造技术"(2011ZX05013)资助
关键词
水平井
改造体积
非常规致密油气
完井方式
钻井轨迹
horizontal well,reservoir volume reconstruct,unconventional tight oil/gas,well completion,drilling trajectory
作者简介
才博（1979-），2013年1月毕业中国地质大学（北京）油气田开发工程并获博士学位，现工作于中国石油勘探开发研究院廊坊分院，主要从事水力压裂工艺技术研究与现场应用。地址：（100083）河北省廊坊市万庄石油分院压裂中心，电话：010-69213017，E-mail：boocail23@126．com
